It's high summer, and for a lot of us that means it's time to go camping. This summer, we're celebrating one particular camping trip.
Way back in 1858, Ralph Waldo Emerson, the great philosopher and poet, set out into the Adirondack Mountains in New York. On the famous journey, he took with him some of the most famous artists, scientists and thinkers of his day.
This year, I set out early in the morning in my canoe with a company of my own: environmental activist and writer Bill McKibben and our guide, Mike Carr with the Nature Conservancy.